Motorola PTP 500 Installation Guide download pdf (Page 22)

PTP 500 Installation Guide

phn-2508_005v000 (Mar 2013)

Page 19

6. Installing the drop cable and LPU

Preparing drop cables

Main drop cable: To prepare a long section of cable to connect the ODU to the LPU,

proceed as follows:

Cut off the approximate length required (allowing a bit of surplus), or leave it on

the drum so that it can be unwound as the cable is hoisted.

Slide one or more hoisting grips onto to the top end of the main drop cable. To

determine the number of hoisting grips required, consult the grip manufacturer.

Secure the hoisting grip to the cable using a special tool, as recommended by the

manufacturer.

Fit an RJ45 connector and gland to the top end only, as described in Assembling

an RJ45 connector and gland on page 19.

LPU-PIDU drop cable: To prepare a short section of drop cable to connect the LPU to

the PIDU (or PTP-SYNC): cut off the approximate length required (allowing a bit of

surplus), then fit an RJ45 connector and gland to the LPU end only, as described in

Assembling an RJ45 connector and gland on page 19.

Hoisting grips are designed for hoisting cable safely up a tower and providing

permanent support so that mechanical connection to an antenna can be made. A clamp

is placed over the grip and secured to the cable with a special tool. When the cable is

in position and the grip handle is fastened to a tower member, the hoist line can be

removed.

Assembling an RJ45 connector and gland

Perform this task to prepare the outdoor Cat5e cable with connectors and glands.

The metal screen of the drop cable is very sharp and may cause personal

injury.

When preparing the drop cable, take the following safety precautions:

• ALWAYS wear cut resistant gloves (check the label to ensure they are cut resistant).

• ALWAYS wear protective eyewear.

• ALWAYS use a rotary blade tool to strip the cable (DO NOT use a bladed knife). To

use the rotary blade tool, fit it around the outer cable sheath and rotate the cutter

around the cable once or twice. The stripped outer section can then be removed.

Assemble the drop cable as shown. The gland is only required for outdoor connections,

that is, at the ODU or LPU. The connection to the PIDU requires the RJ45 plug but no

gland:

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Motorola PTP 500 Installation Guide Page 22